William h



W. H. BRiSTOL.

ART OF MELTING METALS. APPLIcA'TmN man DEC.24.191B.

Patented Sept. 9,1919;

III IV Be it known that}, Nimitz WILLIAM H. ensues; o n Werensnns,eons-incomes, nssmnon so one enisron 1 censure, on WATEEBUBY,GQEZNEGTIGUT, n onerous ion. comm ssions.

5.7511 95 MEETING METALS.

Lemons.

To all whom it may concern;

H. Bnrsron,

a citizen of the United Ststes,snd av resident the gnse eulty isexperienced such products over the metal, the action is of Waterbury, inthe countyof New Haven and State of Connecticut, have invented cer-'tain new end-useful Improyements in the Art of Melting Metals, of whichthe following is a specification. i

The invention relates to themelting and alloying of rnetels, end isdirected more particularlytc the prevention of oxidation of the sameduring the melt. It is known to provide forthis purpose ous products ofcombustion of the fuel empioyed to efi ect the melt, but di in properlydirecting efficient, end, 7 furthernot setisfnctoiy nor of combustiontend to invention to provide and so direct a suiteble sndeconomicalmedium that the highly desirable result of practicelly obviatingoxidation is attained without these detrimental features being present,

said method effecting greet saving and perinitting of the carrying on ofthe melting in a more rapid and safe manner. To this end, thereisdirected over the surface of the metal, to proyidea suitable envelopto exclude-vtlie air, it stream of steam, preferably corresponding partsvicW j' dry and superheated, and in such manner es to afiord econtinuous supply of fresh steamand Without interfering with thesimultaneens operation of the various stirring devices required for theproper inixing of the metal or metals.

understood when I with the accompanying drawings, 111

Figure 1 is e verticslse'ction through one type of furnace to which thenew process me. be applied.

Figs, 2 and 3 to which the process may be applied.

.Similar characters of reference designate throughout the severalto'tiie drawings, and more pan tic ileily tc" I thereof. 13 de ignates.a

opening 15 as by a sulated pipe or nozzle 18 which, as sfore.

illustrate, respectively,- a, transverse and e longitudinal section ofe. resistor type ofelectric furnace, illustrating lone form 0%3190l31i6furnace en example of this form Specification 02 Letters Patent.Patented Sept, 5?, notification fllei I-Eceember en, 3923, I Serial 35o.9233,3132. v

the latter to remove the products of com bustion The furnace is designedto be closedby means of e removable top or cover l'which may be ino -e'dover the top of the furnace to provide an opening 15, or the latter maybe formed directly in the said cover. Opening 15, i'szn'areoverWillpemnit of the introduction of the usuel and wellknown stirring andlike instruments (not shown) employed'in the melting and elioymg. v

Upon the bed of coal 13 rests a suitable retainer as the pot or crucible16 for the metal or metals 17 to be melted. or alloyed,

ell of-W'nich is Well understood and forms no particular pertoii'tliepresent invention.

The invention relates-more particularly to the provision of a suitablenon-oxidizing medium to envelop the molten metal 17,

ficulty would be experienced as the moisture 7 would be immediatelyconverted into steam. The supply of tliiszsteem' may be economi-' callyobtained and is readily controlled, the some being furnished, generally,in a con-- tinuons stream 'durine the period of melt The nature of theinvention will be best; end particularly during" theintroduction ofdescribed in connection an alloying metal. The supply of steam may beconveniently introduced through the suitable thermally inseid, may bedirected into the furnace space 19 or into the upper portion of thecrucible 163, the spent steam being drawn off through the fine 12.

"Although the invention has been connection with only one type of fuelfired furnace, it is toloe understood that the some is applicable tovarious Well-known types, also to the electric type of furnace, vmoreP'aTi/lCIE iSI'lj/" SlZiOWII in Figs. 2 and 3. As

offurnnce, erefiistotr type is shown, .2

shown in same com'pmsmg' Ml? interior is heated thi'ougil a suitableK'esis {W ssurce of heat.

mm well-lmown mstrmnents (not shown} an ample-3 9d in the memng andalicymg.

member such as a carbsn rcd wlfzieh mountedin any-conv'canient and Wei11121111161. This form afi'ords awry satisfacmry 11m ace in that thetemperature themof is rez'ldily centro lled, the heat being re'iecwdfrom the inner surface 0f the awa to the metal 26:; and, furthermore,the steam. wiil 110$ have a tendency to extinguish the The main,mam/aver, is lxaneficiaE 110: only with respeais. to the materials beingaudited, but also in. preventing the oxidation of ,the resistor member31, and consequenfly prolenging the life 01"" same and reducing theexpense 0f operation. For the preparation of alloys, particularly brassin' its various proportions, a furnace-wither eiectfic 61 fuelheafiedthus saurd against oxidaiion 01? its melt, is 0f h ea'tesi; vain!"midis: the proce.% 0E datum thereoik, whuzh COTKSESQLS sxaam the-maltof 1 M" P a preventing oxidamm themof, id} (1011. in exchi 11;: airnaa'efimm fi :stream 0ft 9am 0V9? The, i'i'iBLhGd 0f prevanifiingexidwiion mef' i Fae-h1g3 melted ix a fmmgs lmvinga gas mi-i .1 2.115%21p opefllng for 116 insereign of suitzibie stilfrin, apym'aius, which00515? in diiectizl & 5 621m steam 1112011941 an] 0'5"; fling W- He themetal is being; magi-tea, @115; causing {he span: steam ta Eezwe throughthe said ou' alet.

Signe "Waterbury in the can? 0}} New am nfConnecticut $111 21 6, 2.3 ofDacembeig A. 19 f T "$5 meizzh tha pmcess of

